Chapter 15 Population Dynamics

Question 0

What can be used to describe the number of individuals in a population? Name only two

Answer 0

Scarce-rare, infrequent, frequent, abundant

Question 1

What is a population?

Answer 1

A population is a group of organisms or species that associate with each other

Question 2

What is needed to understand the abundance or density of a population?

Answer 2

There needs to be a total count or total census

Question 3

What are the names of proportion in age?

Answer 3

Pre-reproductive, reproductive, post-productive

Question 4

What does sampling by quadrants mean?

Answer 4

Quadrats are measured as a square and used as an estimate of the total population

Question 5

What does sampling by transect mean?

Answer 5

Transects, along a line measure a population through changes in vegetation or landforms

Question 6

What does sampling by Capture-recapture mean?

Answer 6

The capture-recapture technique is when a member of a species is caught and marked. When it is let out and come back, results can be made on how many there are in an ecosystem

Question 7

Population Dynamics are influenced by?

Answer 7

Birth rate(how many are born), death rate(how many die) and migration rate( immigration and emigration)

Question 8

Exponential growth is shown by the different phases of a population. What are they?

Answer 8

Lag phase(when a population size is small), acceleration phase(population increases sharply), and deceleration phase(when a population has finally reached the carrying capacity)